removed redundant brackets in the translated specification

src/main/java/de/tlc4b/analysis/PrecedenceCollector.java

@@ -48,6 +48,7 @@ public class PrecedenceCollector extends DepthFirstAdapter {
 		put("AGreaterEqualPredicate", 5, 5, false);
 		put("ANotEqualPredicate", 5, 5, false);
 		put("APowerOfExpression", 14, 14, false);
+		put("ASubsetPredicate", 5, 5, false);
 		// put("ANatural1SetExpression", 8, 8, false); // NAT \ {0}
 
 		put("AUnionExpression", 8, 8, true);

src/main/java/de/tlc4b/prettyprint/TLAPrinter.java

@@ -2018,10 +2018,10 @@ public class TLAPrinter extends DepthFirstAdapter {
 
 		inASubsetPredicate(node);
 		node.getLeft().apply(this);
-		tlaModuleString.append(" \\in SUBSET(");
-		// tlaModuleString.append(" \\subseteq ");
+		//tlaModuleString.append(" \\in SUBSET(");
+		tlaModuleString.append(" \\subseteq ");
 		node.getRight().apply(this);
-		tlaModuleString.append(")");
+		//tlaModuleString.append(")");
 		outASubsetPredicate(node);
 	}
 

src/test/java/de/tlc4b/analysis/ConstantsTest.java

@@ -115,7 +115,7 @@ public class ConstantsTest {
 		
 		String expected = "---- MODULE test----\n" + "EXTENDS Naturals\n"
 				+ "N == {1,2,3,4}\n"
-				+ "ASSUME N \\in SUBSET(Nat) \n"
+				+ "ASSUME N \\subseteq Nat \n"
 				+ "======";
 		compare(expected, machine);
 	}

src/test/java/de/tlc4b/prettyprint/SetTest.java

@@ -154,7 +154,7 @@ public class SetTest {
 		String machine = "MACHINE test\n"
 				+ "PROPERTIES {1} <: {1} \n" + "END";
 		String expected = "---- MODULE test----\n"
-				+ "ASSUME {1} \\in SUBSET({1})  \n"
+				+ "ASSUME {1} \\subseteq {1}  \n"
 				+ "======";
 		compare(expected, machine);
 	}